{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9876f61829afc2b85a22f522a46265e0cb7990cc7a2daeac55c2d32c9d91729a",
    "signature": "0xdbf4280cc6b5fea8915a68058f4ac53795b63d2988ff4c0004e110398ca61b793a0e14fdbf9a925b0b98da436a52385872e146ac8f58f790a0beb2808e7e4e071b",
    "signer": "0x93A8aeeAA954F122c16599B38Ed491e8695e599B",
    "userId": "57849"
  }
}